It has an amazing built in document viewer and zip extractor.
Simple user interface is really very easy to use, meanwhile it contains many powerful features.
You can transfer files with Wifi Browser to your iPhone,iPad or iPod and view them anywhere!
APP FEATURES
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+ Store and view files on your iPhone / iPad.
+ Save and send email with attachments anytime you want
+ Navigate using swipes (like Photos / iBooks app).
+ Thumbnails let you preview your files.
+ Copy, paste, cut and delete files.
+ Dropbox and OneDrive support
+ View and download email attachments.
+ Send files you store as attachment via email.
+ Full screen file viewer.
+ Wifi file transfers.
+ Extract and create zip files.
+ Extreme built-in Player